Die-plate



L.. c. WETZEL. DIE PLATE.

Patented Aug. 23, 1892'.

INVENTOI? aw b A 7'TOHNEYS.

UNITED STATES PATENT OFFICE.

LEWIS CALVIN WETZEL, OF SCOTTDALE, PENNSYLVANIA.

DIE-PLATE.

SPECIFICATION forming part of Letters Patent No. 481,450, dated August23, 1892. Application filed PebruaryZS, 1892. Serial No, 422,449. (Nomodel.)

To all whom, it may concern: 7

Be it known that I, LEWIS CALVIN WET- ZEL, of Scottdale, in the countyof \rVestmoreland and State of Pennsylvania, have invented a new andImproved Die-Plate, of which the following is a full, clear, and exactdescription.

The object of the invention is to provide a new and improved die-platewhich is simple and durable in construction, very effective inoperation, and arranged to quickly and conveniently bring thedesired-sized die into proper position for immediate use.

The invention consists of certain parts and details and combinations ofthe same, as will be fully described hereinafter, and then pointed outin the claims.

Reference is to be had to the accompanying drawings, forming apartofthis specification, inwhich similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of theimprovement. Fig. 2 is a side elevation ofthe same. Fig. 3 is a sectional side elevation of the same on the line 33 of Figs. 1 and 4, and Fig. 4 is a plan view of the stock.

The improved die-plate is provided with a die-stock A, made in twosections B and B,

hinged together at G at the rear side, as is plainly illustrated inFigs. 1 and 4. The sections B and B are formed with suitable handles Dand D, respectively, for conveniently manipulating the die-plate whenusing the same.

In the sections B and B are formed circular recesses E and E,respectively, in which fit the dies F and F, respectively, also made ofcircular shape and formed at their under sides with shafts F fittinginto corresponding recesses .01 bearings arranged in the sections B andB.

In order tohold the dies F and F in position in the sections B and B andat the same time permit the dies to revolve, washers G are provided,fitting on the under sides of the shafts F and abutting against theunder sides of the sections B and B. A screw H passes through each ofthewashers and screws into the respective shaft F so as to hold thewasher in place to prevent accidental displacement of the respective dieF or F.

In the peripheries of the circular dies F and F are formed recesses Iand 1, respectively, having threads, so as to form cutters, the two diesbeing provided with correspondinglysized recesses I and I andcorresponding threads therein, so that when the dies are turned theopposite or registering recesses I and I form a circular cutter for thedesired size of bolt to be out. By this arrangement the desired numberof different-sized cutters may be arranged on the two disks, the latter,however, have to be turned to bring the corresponding-sized recessesinto register at the joint of the two sections B and B, as will bereadily understood by reference to Figs. 1 and 3.

Directly belowthe registering recessesIand I of the two dies F and F isformed an enlarged opening B in the adjacent edges of the two sections Band B, so that the bolt to be out can readily pass through the saidaperture to be engaged by the cutter.

In order to fasten the dies F and F in the proper place after twocorrespondingly-sized recesses have been brought into register with eachother, pins J and J are employed, extending vertically through the diesF and F and engaging a corresponding aperture B formed in the sections Band B, as is plainly shown in Fig. 4.

When it is desired to change the position of the dies F and F, so as tobring a different-sized cutter over thecentral aperture B then theoperator withdraws the pins J and J from the corresponding apertures Bin the sections B and B and then turns the dies until they reach thedesired position. At that time the pins J and J register with thecorresponding apcrtures B The pins are then pressed downward, so as toengage the corresponding apertures B to lock the dies in place. The pinsJ and J are formed at their upper ends with suitablehandles forconveniently inserting or withdrawing the pins, as above described, andfor moving or turning the dies on their shafts F In order to lock thetwo sections B and Bof the die-stock in position when the sections areclosed, a locking-bar K is provided, pivoted at K to the front edge ofthe section B, the said bar extending over the front edge of the twosections and being formed at its free end with an inwardly-projectinglug K in which N is provided, formed with an elongatedslot N, engaged bya pin 0, projecting from the top of the section B. The pin 0 forms apivot for the catch N and permits the latter to have a slightlongitudinal movement, so as to engage with its book end N a. pin P,

projecting from the top of the locking-bar. K...

As shown in Fig. 1, the two dies F and. E are formed with sixdifferent-sized cutters, so that the die-plate can be readily utilizedfor cutting threads on six different-sized bolts.

It is understood that the dies F and F are turned on their shafts Fas-above described, so as to bring the corresponding-sized recesses intoproper register over the aperture: B. Whenthis isdone, the dies arelocked inplace by the pins .1 and J, and the die-plate is then used: in.the usual manner for the thread; the bolt being engaged first bytheopenin-g B andthen by the threads in the registering recesses Iand 1. When the thread has been cut, the operator swings the catch N Trearwai 'd, so. as to disengage the pin P, and bythen looseningthe-set-screw L the bar K isswung outward to permit of opening thesections B and Bof the-stocksA, the said sections swinging on the pivot.C, and thus disengagingthe dies F and F from the threaded bolt.

position by the bar K, the latter being fastened in place by the catchN.Another bolt of the samesize can then be cut in the mannerabovedescribed.

It will be seen that this die-plate. is very f simple and durable inconstructionand com- The sections. B and B are then again closed-andlocked in claim-as new and desire to secure by Letters Patent- 1. In adie-plate, the combination, with the stock A, formed of two sections BB, hinged together at one side and provided with the circular recesses EE, handles D D, and open- .ing B3 in, the adjacent edges of thesections, of the dies F F',.fitting in the recesses E E and providedwith shafts F mounted in bearings in the said sections, and with thethreaded recesses I I, means for lockingthe dies in j position in saidrecesses, and the bar K, hinged to one section-and havingitsfreeend Edetachably secured to the other section, substantially as described.

2. In a die-plate, the combination, with the stock A, formed of twosections B B, hinged together at one side and provided with the circularrecesses E E, apertures B handles DD", and opening-B in the adjacentedges ,of the sections of thediesF F, fitting the recessesE E andprovided with shafts-F fitting in bearings in the said sections, andwith the threaded: recessesI I in their peripheries,

the-pins J J, extending through thedies and engaging the aperturesB ofthe sections, the bar K, hinged to one section and provided with. aninwardly-projecting lug, and a set screw and catch for locking the freeend of' the-bar tothe other section, substantially as herein shown anddescribed.

LEW-IS CALVIN WETZEL.

1 Witnesses:

J OHN- RUTHERFORD, JAMES DALTON.

